diff --git a/mediapipe/tasks/cc/components/processors/proto/transformer_params.proto b/mediapipe/tasks/cc/components/processors/proto/transformer_params.proto
index 8c1daf27..b2d13c3a 100644
--- a/mediapipe/tasks/cc/components/processors/proto/transformer_params.proto
+++ b/mediapipe/tasks/cc/components/processors/proto/transformer_params.proto
@@ -43,4 +43,7 @@ message TransformerParameters {
 
   // Number of stacked transformers, `N` in the paper.
   int32 num_stacks = 7;
+
+  // Whether to use Multi-Query-Attention (MQA).
+  bool use_mqa = 8;
 }